This undated handout image provided by the U.S. Marshals Service on Dec. 28, 2009 shows Umar Farouk Abdulmutallab. Abdulmutallab, 23, is a Nigerian man suspected of attempting to blow up Northwest 253 flight as it was landing in Detroit on Christmas day.

DENVER —­­­ The Nigerian man known as the "Underwear Bomber" sued the Federal Bureau of Prisons and Attorney General Jeff Sessions Wednesday in federal court in Denver, alleging his constitutional rights are being violated at the ADX supermax prison in Florence, Colo.

The lawsuit, filed in U.S. District Court of Colorado, alleges that Umar Farouk Abdulmutallab has been forced into solitary confinement for an undetermined amount of time, that he's been chastised by other prisoners and guards for being Muslim, and that he's been force-fed non-halal food when he went on hunger strikes to protest his alleged mistreatment.

Abdulmutallab is serving four life sentences, plus 50 years without parole, after he was convicted of attempted use of weapons of mass destruction charges. He was sentenced in February 2012 and transferred to ADX the next month.

Abdulmutallab had tried to detonate explosives hidden in his underwear while aboard a flight from Amsterdam to Detroit on Christmas 2009.

He was alleged to have connections to al-Qaeda and Muslim cleric Anwar al-Awlaki, the Colorado State graduate who had called for the killing of Americans before he was likely killed in a drone strike in late 2011.

The lawsuit alleges that once Abdulmutallab got to ADX in Colorado, he was immediately placed in long-term solitary confinement and placed under special administrative measures (SAMs) that prohibited his communication with most of his family members up until last year, when he was allowed to talk to his sister.